kirklund commented on a change in pull request #6878:
URL: https://github.com/apache/geode/pull/6878#discussion_r711369453
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File path: geode-serialization/ANALYZE_SERIALIZABLES.md
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@@ -0,0 +1,129 @@
+# Analyze Serializables
+
+## Adding AnalyzeSerializables test to a new geode module
+
+If you've created a new geode module, then add an integration test to detect
any additions or
+changes to serializable classes in the module.
+
+Change the module's build.gradle to add a dependency on geode-serialization:
+```
+integrationTestImplementation(project(':geode-serialization'))
+```
+
+Create `AnalyzeModuleSerializablesIntegrationTest` that extends
+`AnalyzeSerializablesJUnitTestBase`. It needs to be in package
`org.apache.geode.codeAnalysis`.
+
+## Implementing SanctionedSerializablesService
+
+If you've changed or added any serializable classes to a geode module, the
previously added
+integration test should fail. You'll need to implement
SanctionedSerializablesService for the geode
+module.
+
+Change the module's build.gradle to add a dependency on geode-serialization:
+```
+implementation(project(':geode-serialization'))
+```
+
+Create a new ModuleSanctionedSerializablesService that implements
SanctionedSerializablesService:
+```
+src/main/java/org/apache/geode/module/internal/ModuleSanctionedSerializablesService.java
+```
+
+Add a service file for SanctionedSerializablesService:
+```
+src/main/resources/META-INF/services/org.apache.geode.internal.serialization.SanctionedSerializablesService
+```
+
+Add a line to the service file specifying the fully qualified name of the
service implementation:
+```
+org.apache.geode.module.internal.ModuleSanctionedSerializablesService
+```
+
+Update AnalyzeModuleSerializablesIntegrationTest to return the new
SanctionedSerializablesService
+implementation from `getModuleClass`:
+```java
+@Override
+protected Optional<Class<?>> getModuleClass() {
+ return Optional.of(ModuleSanctionedSerializablesService.class);
+}
+```
+
+## Fixing failures in AnalyzeModuleSerializablesIntegrationTest
+
+AnalyzeModuleSerializablesIntegrationTest analyzes serializable classes in a
module. It fails if
+either:
+- a new serializable class is added to the main src
+- an existing serializable class in main src is modified
+
+The content of the failure message depends on whether the module implements
+SanctionedSerializablesService.
+
+If it implements SanctionedSerializablesService, the failure message looks
like:
+```
+New or moved classes----------------------------------------
+org/apache/geode/CancelException,true,3215578659523282642
+
+If the class is not persisted or sent over the wire, add it to the file
+
/Users/klund/dev/geode3/geode-core/src/integrationTest/resources/org/apache/geode/codeAnalysis/excludedClasses.txt
Review comment:
No, I'll remove it
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